TM 5-3895-383-24Illustration 20Swashplate and Barrel Assembly(1) Shaft. (4) Cylinder barrel. (7) Port plate. (8) Swashplate. (9) Spring. (10) Piston.The maximum position of the swashplate (8) is shown inillustration (2). As the pistons (10) follow the swashplate thepistons move in and out of the barrel (4). As the pistons (10)move out of the cylinder, oil is supplied behind the pistons.This oil is supplied under pressure from the charge circuitthrough passage (13). Oil is pushed ahead of the pistons (10)and this oil goes through the outlet passages of the port plate(7). Oil will exit the pump through the main loop (11). Thesurfaces of the port plate (7) and the barrel (4) are spherical inshape. The inlet oil and the outlet oil are sealed from eachother by a metal-to-metal seal. The seal is located betweenthe spherical faces of the port plate (7) and the cylinder barrel(4).11-25